Novel mixed-mode universal biquad configuration

IEICE Electronics Express

D. R. Bhaskar³  A. K. Singh²  R. Senani⁴  V. K. Singh¹ 

[1] Department of Electronics Engineering, Institute of Engineering and Technology;Electronics and Communication Engineering Department, Inderprastha Engineering College;Department of Electronics and Communication Engineering, Faculty of Engineering and Technology;Division of Electronics and Communication Engineering, Netaji Subhas Institute of Technology (formerly, Delhi Institute of Technology)

关键词: current-feedback operational amplifiers;    biquad filters;    current-mode circuits;    circuit theory and design;    mixed-mode filters;   

DOI  :  10.1587/elex.2.548

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(4)Cited-By(17)Although a variety of CFOA-based biquads have been known in the literature, any CFOA-based circuit capable of realising universal biquad filters in all the four possible modes i.e. voltage-mode, current-mode, trans-admittance-mode and trans-impedance-mode, has not been reported in the literature so far. In this paper, a novel configuration has been presented, which realises all the five generic filter functions (namely, low-pass, band-pass, high-pass, notch and all-pass) from the same circuit in all the four possible modes, employing only four-Current feedback operational amplifiers (CFOA) along with two grounded-capacitors as desirable for Integrated Circuit implementation. The workability of the circuit has been confirmed by hardware implementation based on AD844 type CFOAs.

【 授权许可】

Unknown